<template>
  <div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" />
  <svg v-else :class="svgClass" aria-hidden="true" v-on="$listeners">
    <use :xlink:href="iconName" />
  </svg>
</template>

<script>
// doc: https://panjiachen.github.io/vue-element-admin-site/feature/component/svg-icon.html#usage
import { isExternal } from '@/utils/validate'

export default {
  name: 'SvgIcon',
  props: {
    iconClass: {
      type: String,
      required: true
    },
    className: {
      type: String,
      default: ''
    }
  },
  computed: {
    isExternal () {
      return isExternal(this.iconClass)
    },
    iconName () {
      console.log(`Generating iconName: #icon-${this.iconClass}`)
      return `#icon-${this.iconClass}`
    },
    svgClass () {
      if (this.className) {
        return 'svg-icon ' + this.className
      } else {
        return 'svg-icon'
      }
    },
    styleExternalIcon () {
      return {
        mask: `url(${this.iconClass}) no-repeat 50% 50%`,
        '-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`
      }
    }

  }
}
</script>

<style scoped>
.svg-icon {
  /* width: 1em; */
  /* height: 1em; */
  /* vertical-align: -0.15em; */
  /* fill: currentColor; */
  /* overflow: hidden; */
  /* min-width: 16px;  或其他合适值 */
  /* min-height: 16px; */
  /* 修改index.vue中的svg-icon样式 */
  width: 16px !important;
  height: 16px !important;
  min-width: 16px !important;
  min-height: 16px !important;
}
.use{
  font-size: 14px;
}
.svg-external-icon {
  background-color: currentColor;
  mask-size: cover!important;
  display: inline-block;
}
</style>
